HEMIBULIMUS. 115 



species of the group Hemibulimus, correcting various errors 

 which, by reason of the scarcity of material, had been per- 

 petuated from author to author. 



The relation of Hemibulimus to Liguus is not very close 

 and I now doubt the propriety of including them in one 

 genus. Except in the structure of the columella, Hemi- 

 bulimus is very similar to Porphyrobaphe. 



1. HEMIBULIMUS EXCISUS (v. Marts.) Vol. XII, p. 185, pi. 



36a, figs. 31-34. 



Popayan, Colombia, at 2400 meters. Type species of Hemi- 

 bulimus. While evidently related to dennisoni, it is prob- 

 ably distinct, at least varietally, as Mr. Smith believes. In 

 Vol. XII I followed Professor von Martens in uniting excisus 

 and magnificus. 



2. HEMIBULIMUS DENNISONI (Reeve). PI. 40, fig. 1. 



"Shell fusiformly ovate, spire rather acuminated, whorls 

 6, somewhat rudely faintly plicately striated, decussated with 

 fine impressed striae. Apex somewhat papillary. Columella 

 arched and twisted, attenuately truncated. Pale brown, varie- 

 gated towards the apex with darker brown, last whorl un- 

 spotted, encircled with a pale obscure band, columella pink- 

 ish." (Reeve}. 



Bogota (J. Dennison, Esq.). 



Achatina dennisoni REEVE, Conch. Icon, v, pi. 9, f. 32 

 (March, 1849). PFR., Monogr. iii, 486. Liguus (Hemibuli- 

 mus) dennisoni (Reeve) E. A. SMITH, Proc. Malac. Soc. 

 London vii, 1907, p. 314, 313. Achatina magnified, REEVE, 

 op. cit. pi. 9, f. 33, not of Pfeiffer. L. magnificus (Pfr.) 

 PILSBRY, Man. Con. xii, pi. 36 a, fig. 30 (not the description). 



Reeve described and figured a shell from the Dennison col- 

 lection. The present location of the type is unknown. The 

 figure (copied on pi. 40, fig. 1) shows a pale red-brown shell 

 with decidedly attenuate early whorls, a brown-spotted sub- 

 sutural band, and two other pale bands on the last whorl. 

 The parietal wall is purplish but not black. The aperture 

 is markedly acuminate above. Judging from the description 



